V Bank Filter In Metal Frame is a pre-filter before HEPA filter. It plays the most important role in clean room ventilation systems whenever filtration level 100 or 10. It has more filtration efficiency and stable performance than pocket filters. To prolong service life of HEPA filters, it requires of removing most of the 0.5um particles with efficiency from ranging from 75% to 99%. The V Bank Filter In Metal Frame features large air flow, special sealant, wide media area, easy installation and maintenance.